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Fundus Fluorescien Angiography (FFA)

This investigative procedure comprises of injecting a dye -FLUORESCEIN into one of the veins in your arm and either taking rapid serial photographs of its passage within the delicate blood vessels of the eye in the retina and choroid , using a digital Fundus camera or HRA or rarely examining the inside of your eye with an INDIRECT OPHTHALMOSCOPE using appropriate filters.

The information obtained from this test aids your doctor in making a diagnosis and planning treatment especially using different kinds of laser such as Diode, Argon,532 DF YAG PDT or TTT.

Apart from the needle prick and the light flash of the camera there is no discomfort from this test.If nausea appears remain calm and take deep breaths which helps in overcoming it.Your usual diet can be taken soon after the procedure.Fluorescein is highly non-toxic drug.In rare Instances , it can produce allergic reaction, which responds rapidly to appropriate medication.Serious life threatening allergic reactions, though exceptionally rare, can occur.The skin and urine may appear yellow in colour for about 36 hours following the test,and is not a cause of any concern .

You must be accompanied by an adult attendant during this test.


INSTRUCTIONS TO PATIENTS:

1.Patient is requested not to take any food or liquids by mouth for at least two hours prior to the appointment time.This is to avoid nausea and occasional vomiting e.g., the patient can take a light breakfast at 8:00a.m., if asked to report at 10:00a.m.

2.If the patient is using any regular medications for general conditions such as diabetes, bloodpressure etc., the usual dose of all such medications must be taken.

3.The test will be performed only if the B.P. is within normal limits.If it is high the test will be postponed.If you are hypertension,kidney or liver diseases,please consult your physician for fitness

4.If the patient is allergic to any medications or iodine preparations he/she will be required to consult an allergy specialist to rule out an allergy to the dye used during the test.The test will be carried our only after obtaining clearance from the allergy specialist.

5.Patients may have wait for 1-2 hours, becasue FFA required a good dilation.

6.Diabetic patients are required to bring biscuits or glucose to take immediately after completion of the test , to avoid hypoglycemia.

7.Kindly inform the doctor if the patient is pregnant, as it is preferable to avoid this test during the first 3 months of pregnancy.

8.Patient has to be accompanied by one adult attendant.


Equipments

At the core of every successful treatment is a reliable diagnosis. This is why ZEISS has combined the diverse functions of sound retinal diagnostic procedures to produce one pioneering solution: the FF450plus fundus camera. In combination with the VISUPAC® image processing system, it allows for a unique level of diagnostic accuracy. It delivers images with the clearest details, thus providing the dependable basis for first-class treatment outcomes.

The renowned optical quality of the FF450plus and integration with VISUPAC’s digital imaging capabilities makes the difference. The result is images of exquisite detail – a must for today's demanding ophthalmic professionals – be it for disease documentation, presentations, or for use in clinical trials. Its optical zoom features three magnification levels (20°, 30° and 50°) for optimal diagnostic insight. In addition, the highly flexible tilt and swivel mechanism allows imaging from virtually any angle.

The exclusive ZEISS telecentric optics of the FF450plus provide constant magnification, independent of focusing and position, resulting in virtually no distortion. Together with VISUPAC’s uniquely harmonized sensors, this enables you to accurately and repeatedly determine and analyze disease progression.